Micrometer adjustment for worktables of grinding machines



Aug. 17 1926.

' A. WILLIAMS uzcaoms'rsn ADJUSTMENT FOR wonK'rABLEs oF eanwme mcumns Filed August 23, 1924 2 s ts-sh t, 1

lnbenror \"(hurmnhams Aug. 17, 1926. 1,596,702

A. WILLIAMS MICROMETER ADJUSTMENT FOR WORKTABLES 0F GRINDING MACHINES Filed August 23, 1924 2 Sheets-Sheet 2 I 1 Y L,

FM. 1 I76 5 'lnueu-r ov flrfhurmiuimus Bx (tor-nu ing machines it may. be mountedfor recip- 0 Patented Aug. 17, 192%.

UNITED stares 'ATENT OFFICE.

ARTHUR WILLIAMS, 0F GRAND RAPIDS, MICHIGAN, ASSIG'NOR. TO WILMABTH & MOR- MAN COMPANY, OF GRAND RAPIDS, MICHIGAN, it. CORPORATION OF MICHIGAN.v

MICROMETER ADJUSTMENT FOR WOBKTABLES OF GRINDING MACHINES.

Application filed August 23, 1924. Serial No. 733,688.

g This invention relates to a novel construction of micrometer adjustment for work tables of metal workingmachines. In practire, I have ap lied this invention to the work tables of grinding machines though the invention is not to be considered as limited in use to this one type of machine.

It is a primary object and purpose of the present invention to apply to the work carrying table mounted to swing about a vertical axis on and above a sub-table, a means for adjusting said work table to minute eXactness and this in afvery simple and effective manner. The invention consists of novel details of constructions, combinations and arrangements of parts for practically and effectively attaining the above named object, as will fully appear when understanding of the invention is had from the following description, taken in connection with the accoinpanying drawings, in which, V

Fig. 1 is a plan view, with parts broken away and shown in section, of an upper work table and a lower sub-table having my invention applied thereto.

Fig. 2 is a front elevation thereof.

Fig. 3 is a fragmentary plan of the subtable at the middle portion thereof and showthe studs used to connect the upper table and sub-table in horizontal section.

Fig. 4: is a fragmentary vertical section through the structure, the section bemg on a broken plane passing through the rear. at-

taching stud and one of the front attaching studs. V

Fig. 5 is a like view, the section being so as to show the manually operable micrometer screw in side elevation, and

Fig. 6 is a perspective view of the arcshaped member carried in the circular slot in the upper side'of the sub-table and which 18 used in effecting the micrometer adjustment of the upper tablewith respect to the subtable.

Like reference characters refer to like parts in the different views of the drawings. p

- The sub-table 1 may be of any desired construction, being elongated, and in grindrocatorymovements in the direction of its length. This table substantially nndway between its ends, is formed wlth an lntegral upwardly extending circular portion or boss 2 in which a circular'T-slot 3 is cut, at one side having a lateral enlargement 3 for the passage of the heads of 'T-bolts into the slot as shown in Fig. 3. A stud 4 is centrally located in the boss to serve as a pivot on which the upper or work carrying table may be mounted, said stud at its upper end having an'enlarged head r, as shown in Fig- 4. Within the slot 3 an arc-shaped member 5 is seated toward the front and one side of the slot (see Fig. 8) and in the upper side of the member 5 two'notches 6 and 7 are out part way through the member, the notch 6 being of less width than the notch 7. V

The upper or work carrying. table 8 is formed on its under side with a downwardly projecting circular'boss 9 of substantially the same diameter as and adapted to rest upon the boss 2, previously described, there being a recess centrally located in the under side of said boss 9 for reception of the enlarged head l of the stud 4. It will be noted that the vertical grooved outer surface of the boss 2 carries a graduated scale and that the boss has a cooperating indicating mark or pointer which, as the upper boss 9 is turned about scale so as to indicatethe amount of angular ad ustment. The boss 9. is also formed with .an upwardly projecting portion 9 having a fiat upper surface through which attaching studs, later described, pass.

Cast integral with the upper table is a forwardly projecting barrel 10 internally bored as indicated at, 11 for the passage of the micrometer screw, as will later appear. The boss.9 is, also formed adjacentthis barrel with. a vertical oblong opening or slot 12 as shown. In the rear side of the table an under cut slot 13 is provided. ,Two studs 14 having heads 14 received in the wider lower portions of the T-slot 3 extend upwardly through vthe boss 9, one into the slot 13 at the rear and the other at theleft of the slot 12. These studs are threaded attheir upper ends for the reception of nuts and it is ev-iits lower end receivedwithin the enlarged lower portion of the T-slot 3 and seats in the dent that when the nuts are tightened the 'noftch 7 'ofthe member 5,, This stud passes,

upwardly through a bushing 16 which is located in and passes through the opening or slot 12 its'epper gedge extending a short distance above the upper surfaceof the part 9, as best shown in Fig. 4. i

'Apin 17 depends fr.o-rn,a;l1ead=18 and at ally operated. "The part 19 is enlarged toward its'outer end andhas a Continuous grQQYc 21 cut around the? same into which the innerendo t a screw '22 passing through aside of the barrel I is ada )ted to be received, this holdingthe micrometer screw'l9 against any longitudinal movement.

o lvhen it is desirechto changethe position of theupper table with respect to sub-tab le, the nuts on studs Bland 1'5'are loosened and upperptable is moved j approximately to its desired position, this movement the has .11 and o he ud h ft i theslot 3and of course themeinber 5 is in Q YClj shifted with the movement of .itllf t ilfllfli. lhenthe upper table has been niovedto its approximate position the nut hat the upper end ofstud 15, is tightened this vloc k ing'the sleeve 1 6 securely against the subtable andat the same time looking the member 5 against movement. The, upper table however is then erinitted a sli ht movement ,tt v at in either direction owing tothe'elong ation of the slot 12 through which the sleeve passes.

lT-he micrometer sicrewiis then turned in, the d 'e sir edidirectionand the pin 17 seating in the notchffi of member 5 serves to hold. the

head 18 against movement whereupon turn s n th mi mme e s e dm'c n p ls e noveinent of the upper table. This movenews ery Sli hfle c i 1 bf h n erometerfscrew and 1t is ev dent that a very m nu e. and e act adju tm t m y b had; fl i henthe upper table has reached its desired position the nuts fat theupper end .o fsltud l 'at Q- htea and t nne ta le i then h l n XedQQ l iQ With 11 hilt e meer. y i x st a jus m J 'Ilie device opertll t m t g -1.? 1! pended claims an comprehensive of all forms of structure coming within their scope. I claim: 1. In combination with an elongated subtable, an elongated work holding table located aboveand mounted o rthesub-table to turn about a vertical axis located-between the ends of said tables, said sub-table having a circularT-slot out in the upper side thereof, T-bo lts located in the slot and extending upwardly through the upper table said bolts being equipped with nuts for clamping the upper table to the sub-table, a manually operable member rotatably mounted on the upper table, and means interposed: between saidanembe'r andthe sub-table'and partly seated within the' Tv-slot ctor adjusting the upper table to different degrees of angular adjustment with respect to the sub-table. =2. In combination, an elongated sub-table provided between its ends with an upwardly projecting circular boss having a circular T- slot 'eut therein an are-shaped member seated in the slot, said memberin itsupper side liavingtwo notches cut'therein, an upper workholding table pivotally mounted on the si ih-tabletoturn about'ian axis cd incident-with the cent 'er of said boss,-,said uppe'r table having a relatively short oblong 'siotcut therein above the T-.slotin-the-subtable, a stud having a head seated in theslot and extending upwardly through said oblong slot, a'sleeve around the studwithin the oblong slot and projecting a short dismnceabove the adjacent upper side of the work holding table, additional studs having heads seated in the T-slot andextending upwardly through the work holding table,'nuts threaded onto the upper, ends of the studs, said stud passing through the sleeve having its head seated in one er the notches of the arc-shaped member, a headhavinga-dependpin seated in the other notchof the arcshaped member, said head hav-ing a threaded opening" therethrough and a rotatahly mounted screw threaded rod carried 'by the work holding table and passing through said head, said rod" at" its outer endflbeing equipped" with a hand wheel for manual operation, substantially as and for the purpose 'desoribedf In combination, an elongated sub table, an elngated work holding table located jahove the sub-table and pivotally mounted thereon to turn abouts verticalgaxisymeans for releasably clamping the work holding leased permittingthe wor holding table to swing lahout said ve'rtical aic is, additional means movable "wit hthe v work holdingtable gland adaptedftdhe dprated' to' 1imit?t'heantable to fth'e "suitable, said means when m iii) .aa a iisitga eateiir' an means arfi aa the woi'lihdldin'g fiibe inaiiiiirllylo erab'leito o be coiisidefed as' v axis mlnute amounts after sald means has been operated to limit the turning movement of the work holding table.

l. In combination an elongated sub-table formed between its ends and in its upper side with a circular T-slot therein, an are shaped member seated in the slot, its upper side having two spaced apart notches out therein, an upper work holding table pivotally mounted on the sub-table to turn about a vertical axis coincident with the center out the slot, said upper table being formed with a relatively short oblong slot located above the T-slot in the sub-table, a stud having a head seated in the T-slot extending upwardly through said oblong slot, a sleeve around the stud Within said oblong slot projecting a short distance above the upper side of the work holding table, additional studs having heads seated in the T-slots extending upwardly through the work holding table, releasable means on the upper ends of said studs for clamping the work holding table to the sub-table, said stud which passes through the sleeve having its head seated in one of the notches of the are shaped memher, a pin formed with an upper head seated at its lower end in the other notch of the are shaped member, said head having a threaded opening therethrough and arotatably mounted screw threaded rod carried by the work holding table and passing through said head and adapted 'to 'be manually turned, siibstantially as described.

In testimony whereof I affix my signature.

ARTHUR WILLIAMS.

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